private void WriteResourceRecord(BinaryWriter message_writer, ResourceRecordCollection resources)
{
foreach (ResourceRecord rr in resources)
{
WriteResourceString(message_writer, rr.Name);
message_writer.Write(CheckSum.ntohs((ushort)rr.Type));
message_writer.Write(CheckSum.ntohs((ushort)rr.Class));
message_writer.Write(CheckSum.ntohl((uint)rr.TimeToLive));
// RDLength (Get Resource Data Length)
switch (rr.Type)
{
case Types.A:
{
Address rrA = (Address)rr;
message_writer.Write(CheckSum.ntohs(4));
message_writer.Write(rrA.IP.GetAddressBytes());
}
break;
case Types.AAAA:
{
Address rrA = (Address)rr;
message_writer.Write(CheckSum.ntohs(16));
message_writer.Write(rrA.IP.GetAddressBytes());
}
break;
case Types.CNAME:
{
WriteResourceString(message_writer, rr.RText, true);
}
break;
};
}
}
public DnsResponse(int ID, bool AA, bool TC, bool RD, bool RA, int RC)
{
this._QueryID = ID;
this._AuthorativeAnswer = AA;
this._IsTruncated = TC;
this._RecursionDesired = RD;
this._RecursionAvailable = RA;
this._ResponseCode = (ResponseCodes)RC;
this._ResourceRecords = new ResourceRecordCollection();
this._Answers = new ResourceRecordCollection();
this._Authorities = new ResourceRecordCollection();
this._AdditionalRecords = new ResourceRecordCollection();
}
public DnsResponse(int ID, bool AA, bool TC, bool RD, bool RA, int RC)
{
QueryID = ID;
AuthorativeAnswer = AA;
IsTruncated = TC;
RecursionRequested = RD;
RecursionAvailable = RA;
ResponseCode = (ResponseCodes)RC;
_ResourceRecords = new ResourceRecordCollection();
Answers = new ResourceRecordCollection();
Authorities = new ResourceRecordCollection();
AdditionalRecords = new ResourceRecordCollection();
}
public static IEnumerable<IPAddress> GetAddresses(ResourceRecordCollection s)
{
ISet<IPAddress> r = new HashSet<IPAddress>();
if (s == null)
{
return r;
}
foreach (ResourceRecord rr in s)
{
if (rr.Type == Types.A || rr.Type == Types.AAAA)
{
Address rrA = (Address)rr;
r.Add(rrA.IP);
}
}
return r;
}
public static IEnumerable<string> FetchAddresses(ResourceRecordCollection s)
{
ISet<string> r = new HashSet<string>();
if (s == null)
{
return r;
}
foreach (ResourceRecord rr in s)
{
if (rr.Type == Types.A || rr.Type == Types.AAAA)
{
Address rrA = (Address)rr;
r.Add(rrA.IP.ToString());
}
else if (rr.Type == Types.CNAME)
{
r.Add(rr.RText);
}
}
return r;
}
